Sign up for a free account(you can load a limited number of pictures with a free account--100M per month) up to 200 pictures by clicking on CREATE YOUR ACCOUNT at the site.
Once an account is created you can upload pictures that can be shared with others, commented on (if you choose), etc.
The best part of Flickr you don't need an account for and this is browsing and searching other people's pictures.
Used the advanced search feature to limit your results and also access pictures with a creative commons use so that students can download and use the pictures in their projects.
How are Teachers Using Flickr?
Digital pictures for multimedia projects
Great visuals for slideshows
Visual images for writing inspiration
Nebraska history projects--there are many pictures from Nebraska!
Inspiration for art projects, drawings and paintings
Flickr Web Site: http://www.flickr.com
Using Flickr
How are Teachers Using Flickr?